Broken line repair method of TFT substrate

a technology of tft substrate and broken line, which is applied in the field of display technology, can solve the problems of poor quality of liquid crystal display with broken lines, waste of liquid crystal display, and the inability to reduce the line ratio to be 0 , to achieve the effect of reducing the risk of broken lines, promoting the adhesion result and uniformity of metal growing film, and raising the success ratio of broken line on the substra

US10101601B2Active Publication Date: 2018-10-16TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
Publication Date
2018-10-16

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Abstract

The present invention provides a broken line repair method of a TFT substrate. The method first finds out a broken line in the TFT substrate and a position of a broken point on the broken line. Then, positions of the passivation layer intersecting with the broken line at two ends of the broken point are processed, respectively to expose a metal layer, where the broken line is. Then, a temporary material layer is covered on the passivation layer and the metal layer which is exposed at the two ends of the broken point. Finally, a metal growing film is formed on the temporary material layer to connect the broken line of the two ends of the broken point. With the temporary material layer, the issue of bad repair result due to the remain of the color resist layer and the folding of the passivation layer can be solved.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates to a display technology field, and more particularly to a broken line repair method of a TFT substrate.BACKGROUND OF THE INVENTION

[0002] The Liquid Crystal Display (LCD) is one of the most widely utilized flat panel displays, and the liquid crystal display panel is the core component of the Liquid Crystal Display.

[0003] The traditional liquid crystal panel generally comprises a Color Filter (CF), a Thin Film Transistor Array Substrate (TFT Array Substrate) and a Liquid Crystal Layer positioned inbetween. The working principle is that the liquid crystal molecules are positioned between the two parallel glass substrates, and many vertical and horizontal tiny little electrical lines are between the two glass substrates, and the light of backlight module is reflected to generate images by applying driving voltages or not for controlling the direction changes of the liquid crystal molecules. The thin film transistor (TFT) array manu...

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Embodiment Construction

[0053]For better explaining the technical solution and the effect of the present invention, the present invention will be further described in detail with the accompanying drawings and the specific embodiments.

[0054]Please refer to FIG. 14 combining FIG. 3, the present invention provides a broken line repair method of a TFT substrate. When the method is applied to repair the broken line in the display region of the TFT substrate, the method comprises steps of:

[0055]step 1, referring to FIG. 4 and FIG. 5, providing a TFT substrate 1 in which a broken line is to be repaired.

[0056]Specifically, the TFT substrate 1 comprises: a substrate 100, a first metal layer 200, which is patterned and located on the substrate 100, a gate insulation layer 300 covering the substrate 100 and the first metal layer 200, a second metal layer 400, which is patterned and located on the gate insulation layer 300, a passivation layer 500 covering the gate insulation layer 300 and the second metal layer 400, ...